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Shimano BR-RS785 Road Post Mount Hydraulic Disc Brake Caliper - Front or Rear

£59.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
- High performance hydraulic road disc brake for efficient braking in all conditions
- Front or rear wheel use for International Standard or Post mount with adapters (not included)
- Oversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffness
- Opposed 2-piston design reduces leading effect and optimal pad wear increases braking control
- Increased pad to rotor clearance reduces the chance of rotor drag
- Forged calliper design is lightweight and rigid
- One way internal fluid circuit makes bleeding easy
- Mineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluid
- Shim-less mounting bracket allows for quick installation and setting up
- Recommended for use with Ice Tech FREEZA Centre-Lock SM-RT99 rotors for optimum braking performance
- Comes complete with resin compound F01A aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg C
- Inline hose routing for low profile design
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Questions & Answers (7) Q & A
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Questions & Answers (7)
Will this post mount caliper work With Tiagra BR4720 Road levers?
02 Aug 2020
yes RT
Shifter compatability
09 May 2020
Sorry to bother you - is there any way you could confirm that this caliper would work with an ST-4720-L shifter?

I'm building a bike with IS mount on the rear. I've purchased a tiagra 4700 disc groupset which includes BR4770-R brake calipers. I plan to use this product instead on the rear with IS to PM adapter.

Thank you!

Hi, sorry we can not confirm this caliper will work with Tiagra 4700 levers. Shimano normally list cross compatible parts, this combination is not listed. Thanks
Recommended STIs
29 Apr 2020

Will these work with Shimano 105 R7020 STIs?

Hi, no. The recommended caliper is BR-R7070. Thanks
do the calipers come pre bleed with hose attached.?
11 Nov 2019
These are calipers only, no fluid or hose included.

Thanks - 12/11/19
Does the calliper come with pads, and also the bleed kit?
12 Mar 2019
Hi there,

This calliper does come with pads however it does not come with the bleed kit.

Do you supply rebuild kits for these calipers, ie seals?
21 Feb 2018
Hi there,

Rebuild kits are not available, all the spares are listed here -

Post mount adaptor?
26 Oct 2017
Says - "Front or rear wheel use for International Standard or Post mount with adapters (not included)"

Does this mean I need an adaptor for (front) post mount?

This brake has a post mount fitting as standard so it will depend on the size of disc rotor you are using and what size rotor your forks are initially designed for to whether or not you need to fit an adaptor.